-86.45% is the change from 251 to 34
Calculation steps:
[( 34 - 251 ) ÷ 251] x 100 = -86.45%
Formula
Percentage change = [(34 - 251) / 251] x 100
Subtract the new number by the original number
34 - 251 = -217
-217 ÷ 251 = -0.8645418326693227
-0.8645418326693227 x 100 = -86.45%